import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
import Users from './components/user/Users.vue'
import Rights from './components/power/Rights.vue'
import Roles from './components/power/Roles.vue'
import Cate from './components/goods/Cate.vue'
import Params from './components/goods/Params.vue'
import GoodsList from './components/goods/List.vue'
import Add from './components/goods/Add.vue'
import Order from './components/order/Order.vue'
import Report from './components/report/Report.vue'
Vue.use(Router)

const router = new Router({
        routes:[
            {path:'/',redirect:'/login'},
            { path:'/login',component: Login},
            {
                path:'/home',
                component:Home,
                redirect:'welcome',
                children:
                [
                    {path:'/welcome',component:Welcome},
                    {path:'/users',component:Users},
                    {path:'/rights',component:Rights},
                    {path:'/roles',component:Roles},
                    {path:'/categories', component:Cate},
                    {path:'/params',component:Params},
                    {path:'/goods',component:GoodsList},
                    {path:'/goods/add',component:Add},
                    {path:'/orders',component:Order},
                    {path:'/reports',component:Report}
                ]
        },

        ]
    }
)
//挂载路由导航守卫
router.beforeEach((to,from,next)=>{
    // to 将要访问的路径
    //from 代表从哪个路径跳转而来
    //next 是一个函数，表示放行
    //    next() 放行   next('/login')  强制跳转
    
    if(to.path === '/login') return next();
    // 获取token
    const tokenStr = window.sessionStorage.getItem('token')
    if(!tokenStr) return next('/login')
    next()
})

export default router